a. y + 2x + 2 = 0 b. y - 2x - 1 = 0 c. y + 2x - 2 = 0 d. y - 2x + 1 = 0
Matematika
aghnayaval
Pertanyaan
a. y + 2x + 2 = 0
b. y - 2x - 1 = 0
c. y + 2x - 2 = 0
d. y - 2x + 1 = 0
b. y - 2x - 1 = 0
c. y + 2x - 2 = 0
d. y - 2x + 1 = 0
1 Jawaban
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1. Jawaban MuhammmadRizky
x1 = -2
y1 = -3
x2 = 4
y2 = 9
Persamaan garisnya,
(y - y1)/(y2 - y1) = (x - x1)/(x2 - x1)
(y + 3)/(9 + 3) = (x + 2)/(4 + 2)
(y + 3)/12 = (x + 2)/6 |Kali silang|
12 (x + 2) = 6 (y + 3)
12x + 24 = 6y + 18
12x - 6y = 18 - 24
12x - 6y + 6 = 0 |:6|
2x - y + 1 = 0
-y + 2x + 1 = 0 |x-1|
y - 2x - 1 = 0 (B)
Semoga Membantu!!!